Question

do the simplest problems=
please answer this....
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Answer 1

Answer:

we know that the sum of all angles in a Δ is 180°

therefore, In Δ QTR

angle Q + angle T + angle R = 180 °

40° + 90° + x° = 180°

therefore,, x = 180 - 130 = 50°

the value of x is 50°